eobeets



(No Modeli) C. BANKER & J. H. ROBERTS.

ELEVATOR BUCKET. No. 325,478. Patented Sept. l, 1885.

llNiTnD STATES PATENT rives.

CHRIST BANKER AND JOHN H. ROBERTS, OF PITTSBURG, PENNSYLVANIA; SAID BANKER ASSIGNOR TO VILLIAM M. BABBOTT, OF SAME PLACE.

ELEVATOR-BUCKET.

SPECIFECATION forming part of Letters Patent No. 325,478, dated September l, 1885.

Application filed October 15, 1984.v Renewed August 3, 189.5. (No model.)

To all whom it may concern,.-

Be it known that we, Cnnisr BANKER and JOHN H. Renners, citizens of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Elevator-Buckets, of which improvements the following is a specification.

In the accompanying drawings,which make part of this specification, Figure l is a view in elevation of a sheet-metal blank for forming an elevator-bucket embodying our invention, Fig. 2, a view in perspective of the same as partially bent into forni; Fig. 8, a similar View of the completed bucket; Fig. 4.', a vertical section at the line .r .e of Fig. 5; Fig. 5, a horizontal section at the line y g/ of Fig. 4., and Fig. 6 a partial vertical section at the line z e of Fig. 5.

The object of our invention is to provide a strong, simple, and inexpensive elevator cup or bucket adapted to be completed and rendered water-tight by galvanizing without the employment ot' extraneous fastenings, and to be readily and firmly connected Without liability to detachment to a link of an 'elevator or conveyer chain.

To this end our invention consists in a blank formed by cutting a sheet of metal to the shape hereinafter described, and an elevator-bucket composed of a single sheet of metal eut, bent around the sides of a link of an elevator-chain, andv seained'as set forth, and thereafter completed by galvanizi1ig,with ont the use of solder or other i'astenings. The improvements claimed are hereinafter fully set forth.

In the practice of our invention We form, by cutting out or stamping with suitable dirs from a piece of sheet metal, a blank which is in a single piece, and is of the shape shown in Fig. l, the relative location and arrange-V ment of the several portions of the blank, which are shown as separated by dotted lilies, indicating the lines on which the blank is subsequently bent,being as follows: The back section, l, is located bet-Ween two chain-linkbearing sections 2, and adjoins atits upper side a back incline sect-ion, 9, having a flange-section, 10, at each of its sides. A side section, 3, adjoins each of the chain-link-bearing sections 2, said sections t aving two inclined sides at top, one of which provides a bearing for the adjacent flange-section 10 of the back in- 55 clinesection, 9. A haltfront section, 4, adjoins the outer side of each of the side sections, 3, and a bottom section, 6, having side lap sections, 7, on its longitudinal sides and a front-lap section, 8, on its outer Vtransverse 6o side, is connected at its inner transverse side with the back section, l., by a bottom fold section, 5.

To form an elevator-bucket,we take a blank of the shape above described and bend each 6 5 of its link-bearing sections 2 into substantially semi-cylindrical forni, as indicated in Fig. 2, thereby producing a groove or channel on each side of the back section, and thereafter slip the bearing-sections so bent over the sides 70 of an open wire link, l1, of an elevator or conveyer chain. The metal of each of the bearing-sections is then closed down upon the adjacentside ofthelinl ,formi1igaeylindricalcas ing surrounding the Wire and connected with 7D the back and adjacent side section by a double thickness of metal, as shown in Fig. 5. The half-front sections, 4, are then bent at right angles tothe side secticns,3, and their adjacent edges united by a double seam, 12, ektending 30 continuously from end to end of the front. The bottom fold section, 5, is then bent upwardly, and closed down against the back section, 1(see Fig. 6,) and the side and front lap sections, 7 S, are turned and flanged over 85 12, on its back by the double thicknesses of 95 the link-bearing sections, and von its bottom by double thicknesses of metal of the depth of the bottom fold, 5, on all four sides. Aiirm connection of the bucket and link is insured,

and as great a resistance as practicable afford- Ico 1 nected to a link as above described, is completed by being rendered water-tight and preserved from oxidation by subjecting it to the ordinary galvanizing-bath, by which its surfaces are covered with a coating of deposited zinc, which also fills up and closes the interstices between the laps of the double seam 12 on the front of the bucket, the seams around the bottom, and the joints of the fianges 10 of the back incline, 9,with the side sections,3. The metal is retained without liability to displacement at any of the joints, and the permanent tightness of the bucket is thereby effectually attained.

Ve are aware that an elevator-bucket formed of a single piece of sheet metal having its edges bent vover upon the adjoining parts is not new, and such,therefore,we do not broadly claim, and are further aware that buckets of such character have been attached to the links of a carryingchain by bending flanges projecting from their backs around the wires of the chain-links. Such method of attachment differs from that practiced under ourinvention in the essential particular that the sockets formed by the bent iianges employed prior to our invention are composed of a single thickness of metal only, and, being open and unsupported on one side throughout their length, are liable to be readily opened and displaced from the link inthe operation of the elevator. In our construction the sockets are continuous on cach side with the body of the bucket, and are connected therewith by double thicknesses of metal,which not only afford increased resistance against the displacement of the socket and link, but also serve as longitudinal braces to stiffen the body of the of the metal of its back and ladjoining extensions of the metal of its sides, is set forth in an application for Letters Patent filed by William M. Babbott and ourselves under date of October 1, 1884, Serial No. 144,421. Such construction we likewise herein disclaim.

\Ve claiml herein as our invention- 1. A blank for elevator-buckets, consisting of a single piece of sheet metal cut or stamped in the shape hereinbefore desciibed-to Wit, having a back section, a back incline section adjoining one end of said back section, and having a flangesection on each of its sides, a link-bearing section adjoining each side of the ,back section, a side section adjoining each link-bearing section, a half-front section adjoining each side section, and a bottom section connected at one side by a bottom fold section to the back section, and having a lap section on each of its three remaining sides, substantially as set forth.

2. An elevator-bucket formed of a single piece of sheet metal cut and bent as described and having its edges united by a longitudinal double lap seam on its front-and by lap-seams at the four boundaries of its bottom, substantially as set forth.

3. An elevator-bucket formed of a single piece of sheet metal cut and bent as described and having its bottom turned inwardly by a fold against its back and flanged over its sides and front, substantially as set forth.

4. The combination of an open-wire chainlink and an elevator-bucket formed of asingle piece of sheet metal and connected to the sides of the link by having the continuous metal of its body bent around and turned down on the same so as to form sockets or bearings connected by double thicknesses of metal with the body of the bucket, substantially as set forth.

In testimony whereof we have hereunto set our hands.

` CHRIST BANKER.

JOHN H. ROBERTS.

Witnesses:

J. SNOWDEN BELL, J AMES A. MCKEAN. 

